动态LINQ ()返回无效结果

public class ValidationRule {
    public string Description { get; set; }
    public string ErrorMessage { get; set; }
    public short Id { get; set; }
    public bool IsActive { get; set; }
    public string Name { get; set; }
    public string NewExpression { get; set; }
    public string OldExpression { get; set; }
}

public class ValidationRuleDto {
    public string ErrorMessage { get; set; }
    public string Name { get; set; }
    public string NewExpression { get; set; }
    public string OldExpression { get; set; }
}

public static class ValidationRuleHandler {
    private static readonly ParsingConfig _parsingConfig = new() {
        AreContextKeywordsEnabled = false
    public static ICollection<string> Validate(
        dynamic oldObject,
        dynamic newObject,
        IEnumerable<ValidationRuleDto> rules) => rules.Select(
        _ => {
            var oldResult = new[] {
                oldObject
            }.AsQueryable().Any(_parsingConfig, _.OldExpression);
            var newResult = new[] {
                newObject
            }.AsQueryable().Any(_parsingConfig, _.NewExpression);
            Debug.WriteLine($"Old => {oldObject.StageText} => {_.OldExpression} => {oldResult}");
            Debug.WriteLine($"New => {newObject.StageText} => {_.NewExpression} => {newResult}");
            return !(oldResult && newResult)
                ? null
                : $"[{_.Name}] {_.ErrorMessage}";
        }).Where(
        _ => _ != null).ToHashSet();
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Dynamic.Core;
namespace ConsoleApp48DynamicLinq
    public class ValidationRule
        public string Description { get; set; }
        public string ErrorMessage { get; set; }
        public short Id { get; set; }
        public bool IsActive { get; set; }
        public string Name { get; set; }
        public string NewExpression { get; set; }
        public string OldExpression { get; set; }
    public class ValidationRuleDto
        public string ErrorMessage { get; set; }
        public string Name { get; set; }
        public string NewExpression { get; set; }
        public string OldExpression { get; set; }
    public class Test
        public string StageText { get; set; }
    internal class Program
        static void Main(string[] args)
            var old = new Test
                StageText = "Not Sold"
            var @new = new Test
                StageText = "Closed"
            var validation = new ValidationRuleDto
                OldExpression = "(StageText != \"Closed\")",
                NewExpression = "(StageText == \"Closed\")"
            var validations = new[] { validation };
            ValidationRuleHandler.Validate(old, @new, validations);
        public static class ValidationRuleHandler
            private static readonly ParsingConfig ParsingConfig = new ParsingConfig
                AreContextKeywordsEnabled = false
            public static ICollection<string> Validate(
                dynamic oldObject,
                dynamic newObject,
                IEnumerable<ValidationRuleDto> rules) => rules.Select(
                    var oldResult = new[]
                        oldObject
                    }.AsQueryable().Any(ParsingConfig, _.OldExpression);
                    var newResult = new[]
                        newObject
                    }.AsQueryable().Any(ParsingConfig, _.NewExpression);
                    Console.WriteLine($"Old => {oldObject.StageText} => {_.OldExpression} => {oldResult}");
                    Console.WriteLine($"New => {newObject.StageText} => {_.NewExpression} => {newResult}");

动态LINQ ()返回无效结果

2 个回答